The KRISS Mag-Ex Kit 2 is the ultimate capacity extending base plate for your factory standard Glock magazines. It is made up of the extended baseplate, outer sleeve, and extended spring, constructed of durable and lightweight reinforced composites. Combining the Mag-Ex Kit 2 with the factory standard Glock magazine body and follower is a perfect match of reliable feeding, toughness, and aesthetics for the KRISS Vector. It can be used for your KRISS Vector, Glock handgun, and your Glock magazine-compatible pistol caliber carbine.The Kriss Mag-Ex Kit 2 is the ultimate capacity extending base plate for your factory standard Glock magazines. The KRISS Mag-Ex Kit 2 is made up of the extended baseplate, outer sleeve, and extended spring, constructed of durable and lightweight reinforced composites. Combining the Mag-Ex Kit 2 with the factory standard Glock magazine body and follower is a perfect match of reliable feeding, toughness, and aesthetics for the KRISS Vector. The Mag-Ex Kit 2 is available in 10mm designed for standard capacity G20 magazines for an overall capacity of 33 rounds of 10mm for your KRISS Vector, Glock handgun, and your Glock magazine-compatible pistol caliber carbine.